Hurricane Floyd was a very powerful Cape Verde hurricane which struck the Bahamas and the East Coast of the United States. It was the sixth named storm, fourth hurricane, and third major hurricane in the 1999 Atlantic hurricane season. Floyd triggered the fourth largest evacuation in US history when 2.6 million coastal residents of five states were ordered from their homes as it approached. The hurricane formed off the coast of Africa and lasted from September 7 to 19, becoming extratropical after September 17, and peaked in strength as a very strong Category 4 hurricane. It was among the largest Atlantic hurricanes of its strength ever recorded, in terms of gale-force diameter.
Hurricane Isabel was the strongest Atlantic hurricane since Mitch, and the deadliest, costliest, and most intense hurricane in the 2003 Atlantic hurricane season. Hurricane Isabel was also the strongest hurricane in the open waters of the Atlantic, both by wind speed and central pressure, before being surpassed by hurricanes Irma and Dorian in 2017 and 2019, respectively. The ninth named storm, fifth hurricane, and second major hurricane of the season, Isabel formed near the Cape Verde Islands from a tropical wave on September 6, in the tropical Atlantic Ocean. It moved northwestward, and within an environment of light wind shear and warm waters, it steadily strengthened to reach peak winds of 165 mph (266 km/h) on September 11. After fluctuating in intensity for four days, during which it displayed annular characteristics, Isabel gradually weakened and made landfall on the Outer Banks of North Carolina, with winds of 105 mph (169 km/h) on September 18. Isabel quickly weakened over land and became extratropical over western Pennsylvania on the next day. On September 20, the extratropical remnants of Isabel were absorbed into another system over Eastern Canada.
Tropical Storm Allison was a tropical storm that devastated southeast Texas in June of the 2001 Atlantic hurricane season. An arguable example of the "brown ocean effect", Allison lasted unusually long for a June storm, remaining tropical or subtropical for 16 days, most of which was when the storm was over land dumping torrential rainfall. The storm developed from a tropical wave in the northern Gulf of Mexico on June 4, 2001, and struck the upper Texas coast shortly thereafter. It drifted northward through the state, turned back to the south, and re-entered the Gulf of Mexico. The storm continued to the east-northeast, made landfall on Louisiana, then moved across the southeast United States and Mid-Atlantic. Allison was the first storm since Tropical Storm Frances in 1998 to strike the northern Texas coastline.
Hurricane Agnes was the costliest hurricane to hit the United States at the time, causing an estimated $2.1 billion in damage. The hurricane's death toll was 128. The effects of Agnes were widespread, from the Caribbean to Canada, with much of the east coast of the United States affected. Damage was heaviest in Pennsylvania, where Agnes was the state's wettest tropical cyclone. Due to the significant effects, the name Agnes was retired in the spring of 1973.
Hurricane Irene produced somewhat heavy damage across southern Florida in October 1999. The ninth named storm and the sixth hurricane of the season, Irene developed in the western Caribbean Sea on October 13 from a tropical wave. It moved northward, hitting western Cuba before attaining hurricane status. Irene struck Florida on October 15 as a Category 1 on the Saffir–Simpson Hurricane Scale, first at Key West and later near Cape Sable. The storm moved across the state and tracked northward over the Gulf Stream. It approached the Carolinas but remained offshore. Irene turned eastward and significantly intensified into a strong Category 2 hurricane on October 18. By the following day, the system became extratropical due to cooler waters to the southeast of Newfoundland and was quickly absorbed by another extratropical low.
Hurricane Dennis caused flooding in North Carolina and the Mid-Atlantic states in early September 1999, which would later be compounded by Hurricane Floyd. The fifth tropical cyclone of the season, Dennis developed from a tropical wave to the north of Puerto Rico on August 24. Originally a tropical depression, the system moved west-northwestward and strengthened into a tropical storm despite unfavorable wind shear. The storm became a hurricane by August 26. After striking the Abaco Islands, conditions improved, allowing for Dennis to strengthen into a Category 2 on the Saffir–Simpson scale by August 28. Around this time, Dennis began to move parallel to the Southeastern United States. Early on August 30, the storm peaked with winds of 105 mph (165 km/h). By the following day, steering currents collapsed and the storm interacted with a cold front, causing Dennis to move erratically offshore North Carolina. Wind shear and cold air associated with the front weakened Dennis to a tropical storm on September 1 and removed some of its tropical characteristics. Eventually, warmer ocean temperatures caused some re-strengthening. By September 4, Dennis turned northwestward and made landfall in Cape Lookout, North Carolina, as a strong tropical storm. The storm slowly weakened inland, before transitioning into an extratropical cyclone over western New York on September 7.
Hurricane Gaston was a minimal hurricane that made landfall in South Carolina on August 29, 2004. It then crossed North Carolina and Virginia before exiting to the northeast and dissipating. The storm killed nine people – eight of them directly – and caused $130 million (2004 USD) in damage. Gaston produced torrential downpours that inundated Richmond, Virginia. Although originally designated a tropical storm, Gaston was reclassified as a hurricane when post-storm analysis revealed it had maximum sustained winds of 75 mph (120 km/h).
Tropical Storm Harvey was a moderately strong tropical storm that caused flooding across south Florida during the 1999 Atlantic hurricane season. The tenth tropical cyclone and eighth named storm of the season, Harvey developed from a tropical wave in the Gulf of Mexico on September 19. After forming, the system gradually intensified and became a tropical storm early on September 20. Throughout the rest of its duration, Harvey slowly intensified as it headed eastward. Late on September 21, Harvey made landfall in Southwest Florida with winds of 60 mph (95 km/h). Harvey emerged into the Atlantic early on September 22, but was absorbed by an extratropical cyclone. The remnants of Harvey reached Atlantic Canada before dissipating.
Tropical Storm Doria was the costliest tropical cyclone in the 1971 Atlantic hurricane season. The fifth tropical storm of the season, Doria developed from a tropical wave on August 20 to the east of the Lesser Antilles, and after five days without development it attained tropical storm status to the east of Florida. Doria turned to the north, and reached peak winds of 65 mph (105 km/h) as it was making landfall near Morehead City, North Carolina. It turned to the northeast, and moved through the Mid-Atlantic and New England as a tropical storm before becoming an extratropical storm over Maine on August 29.
The effects of Hurricane Isabel in North Carolina were widespread, with the heaviest damage in Dare County. The hurricane made landfall in the Outer Banks of North Carolina on September 18. There, storm surge flooding and strong winds damaged thousands of houses. The storm surge produced a 2,000 feet (610 m) wide inlet on Hatteras Island, isolating Hatteras by road for two months. Several locations along North Carolina Highway 12 were partially washed out or covered with debris. Hurricane Isabel produced hurricane-force wind gusts across eastern North Carolina, knocking down trees and power lines. About 700,000 residents lost power due to the storm, although most outages were restored within a few days. The hurricane killed three people in the state – two due to falling trees, and the other a utility worker attempting to restore electricity. Damage in the state totaled $450 million.
Hurricane Humberto was a Category 1 hurricane that formed and intensified faster than any other North Atlantic tropical cyclone on record, before landfall. The eighth named storm and third hurricane of the 2007 Atlantic hurricane season, Humberto developed on September 12, 2007, in the northwestern Gulf of Mexico. The tropical cyclone rapidly strengthened and struck High Island, Texas, with winds of about 90 mph (140 km/h) early on September 13. It steadily weakened after moving ashore, and on September 14, Humberto began dissipating over northwestern Georgia as it interacted with an approaching cold front.
The effects of Hurricane Floyd in New England stretched across the region from Connecticut to Maine and included two casualties. Floyd, once a large and powerful hurricane, made landfall in North Carolina and weakened as it tracked northward along the U.S. East Coast. By September 17, 1999, the storm, downgraded in strength to a tropical storm, was situated over New England. It produced heavy rainfall and gusty winds throughout the entire region, leading to widespread downing of trees and extensive power outages before it moved away later that day. In Danbury, Connecticut, Floyd triggered severe flooding, considered the worst in 40 years, that damaged hundreds of homes. Precipitation in some areas amounted to 10 in (250 mm), with wind gusts approaching hurricane force in Massachusetts. Damage totaled $4.819 million.
The effects of Hurricane Floyd in New York included two deaths and millions of dollars in damage. Hurricane Floyd, once a large and powerful Category 4 hurricane, made landfall in North Carolina and moved northward along the East Coast, making landfall on Long Island as a tropical storm. The threat of the hurricane prompted schools in New York City to close for the first time since 1996, and 20 shelters were opened. Floyd produced flooding rainfall and gusty winds throughout the state, from the southern Hudson Valley to the Lake Champlain area. The flood waters damaged multiple roads and forced residents to evacuate from certain locations. Strong winds left as many as 100,000 people without power and brought down a high number of trees due to the saturated ground. In the aftermath of the storm, 15 counties in eastern New York were declared eligible for state or federal assistance. Damage throughout the state totaled $31.987 million.
The effects of Hurricane Floyd in Pennsylvania were concentrated in southeastern portions of the state, and included over a dozen deaths. Hurricane Floyd made landfall in North Carolina and, in a weakened state, impacted the Mid-Atlantic States with torrential rainfall. Over 10 in (250 mm) of rain in the state caused extensive and damaging flash flooding that affected over 10,000 homes. Many people became stranded due to the flood waters, and thousands had to be evacuated. Relatively strong winds resulted in widespread downed trees, some of which landed on houses and vehicles. Total preliminary damage from the storm was $60 million, and it is estimated that 13 people died due to the storm. Following the floods, multiple counties were declared major disaster areas.
Hurricane Floyd in 1999 was the costliest natural disaster in New Jersey's history, until it was surpassed by Hurricane Irene in 2011. Damage in the state totaled $250 million (1999 USD), much of it in Somerset and Bergen counties. Seven people died in New Jersey during Floyd's passage – six due to drowning, and one in a traffic accident. A police lieutenant took his life after coordinating floodwater rescues for nearly 48 hours.
Hurricane Hermine was the first hurricane to make landfall in Florida since Hurricane Wilma in 2005, and the first to develop in the Gulf of Mexico since Hurricane Ingrid in 2013. The ninth tropical depression, eighth named storm, and fourth hurricane of the 2016 Atlantic hurricane season, Hermine developed in the Florida Straits on August 28 from a long-tracked tropical wave. The precursor system dropped heavy rainfall in portions of the Caribbean, especially the Dominican Republic and Cuba. In the former, the storm damaged more than 200 homes and displaced over 1,000 people. Although some areas of Cuba recorded more than 12 in (300 mm) of rain, the precipitation was generally beneficial due to a severe drought. After being designated on August 29, Hermine shifted northeastwards due to a trough over Georgia and steadily intensified into an 80 mph (130 km/h) Category 1 hurricane just before making landfall in the Florida Panhandle during September 2. After moving inland, Hermine quickly weakened and transitioned into an extratropical cyclone on September 3 near the Outer Banks of North Carolina. The remnant system meandered offshore the Northeastern United States before dissipating over southeastern Massachusetts on September 8.
Hurricane Florence was a powerful and long-lived tropical cyclone that caused catastrophic damage in the Carolinas in September 2018, primarily as a result of freshwater flooding due to torrential rain. The sixth named storm, third hurricane, and the first major hurricane of the 2018 Atlantic hurricane season, Florence originated from a strong tropical wave that emerged off the west coast of Africa on August 30, 2018. The wave steadily organized, and strengthened into a tropical depression on the next day near Cape Verde. Progressing along a steady west-northwest trajectory, the system gradually strengthened, acquiring tropical storm strength on September 1. An unexpected bout of rapid intensification ensued on September 4–5, culminating with Florence becoming a Category 4 major hurricane on the Saffir–Simpson scale (SSHWS), with estimated maximum sustained winds of 130 mph (215 km/h). Strong wind shear then led to rapid weakening, and Florence weakened to tropical storm strength on September 7. Shifting steering currents led to a westward turn into a more suitable environment; as a result, Florence reintensified to hurricane strength on September 9 and major hurricane status by the following day. Florence reached peak intensity on September 11, with 1-minute winds of 150 mph (240 km/h) and a minimum central pressure of 937 mbar (27.7 inHg). An unexpected eyewall replacement cycle and decreasing oceanic heat content caused a steady weakening trend; however, the storm grew in size at the same time. Early on September 14, Florence made landfall in the United States just south of Wrightsville Beach, North Carolina as a Category 1 hurricane, and weakened further as it slowly moved inland under the influence of weak steering currents. Florence degenerated into a post-tropical cyclone over West Virginia on September 17 and was absorbed by another frontal storm two days later.
Tropical Storm Claudette was a weak tropical cyclone that caused heavy rain and tornadoes across the Southeastern United States in June 2021, leading to severe damage. The third named storm of the 2021 Atlantic hurricane season, Claudette originated from a broad trough of low pressure over the Bay of Campeche on June 12. The disturbance moved erratically over the region for the next several days, before proceeding northward with little development due to unfavorable upper-level winds and land interaction. Despite this, the National Hurricane Center (NHC) initiated advisories on it as a Potential Tropical Cyclone late on June 17, due to its imminent threat to land. The disturbance finally organized into Tropical Storm Claudette at 00:00 UTC on June 19 just before landfall in southeast Louisiana. Claudette weakened to a depression as it turned east-northeastward before moving through Mississippi, Alabama, Georgia, and South Carolina. Baroclinic forcing then caused Claudette to reintensify into a tropical storm over North Carolina early on June 21 before it accelerated into the Atlantic Ocean later that day. Soon afterward, it degenerated into a low-pressure trough on the same day, before being absorbed into another extratropical cyclone on the next day.
